Dwyer Instruments, Inc. produces a broad range of competitively priced precision instruments for measuring, transmitting and controlling pressure, temperature, level and flow. Many of these instruments are widely known by their individual brand names, such as Magnehelic and Spirahelic pressure gages, Photohelic switch/gages, Rate-Master, Mini-Master and Visi-Float flowmeters, Slack-Tube and Flex-Tube manometers, and Dwyer pressure switches. Other established Dwyer brands, including Flotect flow and level switches, Hi-Flow valves, Self-tune temperature controllers and Iso-Verter signal converters/isolators, are the products of companies that are now divisions of Dwyer Instruments--Mercoid, W.E. Anderson, Proximity Controls and Love Controls. Dwyer's recent product acquisitions include Dickson's MinigraphTM strip chart recorder, ABB Kent-Taylor's Hi-Flow valves and Quick-Scan recorders and controllers. Another recent addition is a complete line of butterfly valves.Founded in 1931, Dwyer Instruments moved its manufacturing and headquarters from Chicago, Illinois, in 1955, to newly constructed, greatly-expanded facilities in Michigan City, Indiana. The company has since added four more Indiana facilities--in Wakarusa, South Whitley, Kingsbury and Wolcott--as well as manufacturing facilities in Anaheim, California; Fergus Falls, Minnesota; Kansas City, Missouri; and Naguabo, Puerto Rico.\r\n\r\n